US10502260B2 - Method for producing an inner ring for a tapered roller bearing, and tapered roller bearing having an inner ring - Google Patents
Method for producing an inner ring for a tapered roller bearing, and tapered roller bearing having an inner ring Download PDFInfo
- Publication number
- US10502260B2 US10502260B2 US15/578,749 US201615578749A US10502260B2 US 10502260 B2 US10502260 B2 US 10502260B2 US 201615578749 A US201615578749 A US 201615578749A US 10502260 B2 US10502260 B2 US 10502260B2
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- United States
- Prior art keywords
- inner ring
- unfinished
- edge portion
- fixed edge
- raceway
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000004519 manufacturing process Methods 0.000 title claims description 18
- 238000000034 method Methods 0.000 claims abstract description 22
- 238000001125 extrusion Methods 0.000 claims abstract description 20
- 238000005520 cutting process Methods 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 description 10
- 238000007493 shaping process Methods 0.000 description 4
- 238000001953 recrystallisation Methods 0.000 description 3
- 239000011265 semifinished product Substances 0.000 description 3
- 239000013067 intermediate product Substances 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
- F16C19/364—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/10—Making other particular articles parts of bearings; sleeves; valve seats or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/225—Details of the ribs supporting the end of the rollers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
- F16C33/585—Details of specific parts of races of raceways, e.g. ribs to guide the rollers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/64—Special methods of manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/10—Making other particular articles parts of bearings; sleeves; valve seats or the like
- B21D53/12—Making other particular articles parts of bearings; sleeves; valve seats or the like cages for bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/4605—Details of interaction of cage and race, e.g. retention or centring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C43/00—Assembling bearings
- F16C43/04—Assembling rolling-contact bearings
- F16C43/06—Placing rolling bodies in cages or bearings
- F16C43/08—Placing rolling bodies in cages or bearings by deforming the cages or the races
- F16C43/086—Placing rolling bodies in cages or bearings by deforming the cages or the races by plastic deformation of the race
Definitions
- the disclosure relates to a method for producing an inner ring for a tapered roller bearing, in which the inner ring comprises a raceway portion and a fixed edge portion.
- the disclosure also relates to a tapered roller bearing having an inner ring or having the inner ring of the disclosure.
- Tapered roller bearings allow both radial loads and axial loads to be deflected via a bearing.
- Tapered roller bearings usually comprise an inner ring, an outer ring and a plurality of tapered rollers arranged between the inner ring and the outer ring.
- the tapered rollers are embodied—as the term suggests—in the form of a truncated cone, in which the conical surface forms the bearing surface of the rolling elements.
- An edge is usually provided on the inner ring for guiding the tapered rollers. This makes the bearing rings of tapered roller bearings complex components.
- the publication DE 10 2011 00 47 06 A1 discloses a corresponding tapered roller bearing in which an inner ring of the tapered roller bearing comprises an edge, which guides the tapered rollers in an axial direction.
- the rings for the tapered roller bearings are usually produced, in particular parted or cut, from a solid semi-finished product.
- An object of the disclosure is to propose a method for producing an inner ring for a tapered roller bearing, which can be performed cost effectively but which at the same time leads to a sufficiently high quality of the inner ring.
- the disclosure firstly relates, therefore, to a method for producing an inner ring for a tapered roller bearing.
- the tapered roller bearing may comprise an inner ring, an outer ring and a plurality of tapered rollers, in which the tapered rollers are arranged so that they roll between the outer ring and the inner ring.
- the tapered rollers may have a truncated-cone shape.
- the end faces of the tapered rollers may be either plane or contoured.
- the conical surface of the truncated cone of the tapered rollers forms the bearing surface of the tapered rollers.
- the inner ring comprises a raceway portion which forms a raceway, in particular a contact surface or bearing surface, for the tapered rollers.
- the tapered rollers roll on the raceway portion.
- the raceway portion forms a conically tapering raceway, in particular a contact surface and/or bearing surface, for the tapered rollers.
- the inner ring further comprises a fixed edge portion having a fixed edge. The fixed edge serves to check and/or support the tapered rollers via their end face.
- the method comprises the provision of an inner ring blank, in which the inner ring blank comprises an unfinished raceway portion and an unfinished fixed edge portion.
- the unfinished fixed edge portion has a larger outside diameter than the unfinished raceway portion.
- the unfinished fixed edge portion forms a collar or a flange, which adjoins an end of the unfinished raceway portion.
- the unfinished fixed edge portion is arranged at an angle to the unfinished raceway portion.
- the unfinished fixed edge portion and the unfinished raceway portion may be integrally formed as a common component.
- the inner ring blank has a through-opening.
- the through opening may have a minimum inside diameter, the minimum inside diameter being equal to at least 50%, such as at least 80% of the minimum inside diameter of the inner ring.
- the inner ring blank is of sleeve-shaped formation.
- the inner ring blank therefore already forms the basic contour of the inner ring to be subsequently produced. It is proposed here that material be already placed where it will be needed for a subsequent shaping step, in order to minimize the material displacement during the subsequent shaping step.
- the inner ring blank is shaped in a main forming step so as to form the inner ring.
- the unfinished fixed edge portion is transformed into the fixed edge portion and the unfinished raceway portion is transformed into the raceway portion.
- the raceway in particular the contact surface and/or the bearing surface, for the tapered rollers is formed on the raceway portion.
- the forming, in particular cold-forming, in the main forming step be done through extrusion.
- the temperature in the workpiece in this case in the inner ring and/or inner ring blank, is lower than the recrystallization temperature of the basic material of the workpiece.
- the inner ring blank is deformed at ambient or room temperature, preferably at a temperature of ⁇ 50 degrees.
- the forming it is possible, however, for higher temperatures to occur due to the deformation work in the inner ring blank or in the inner ring then produced, although even the higher temperatures are lower than the recrystallization temperature of the basic material.
- the extrusion process advantageously generates surface stresses in the inner ring in the area of the raceway, in particular the contact surface and/or bearing surface, which lead to an increase in performance. It is furthermore advantageous that the extrusion method of manufacture can be performed very cost-effectively in just such large quantities. Overall, the inner ring and hence the tapered roller bearing are cost-effective to manufacture and have good working characteristics.
- the inner ring blank is extruded so as to produce the inner ring.
- the main forming step serves to form, in particular to shape, the contact surface and/or bearing surface of the inner ring.
- the method according to the disclosure without any cutting allows manufacturing in the final contour or final shape (net-shape manufacturing), especially of the raceway, in particular the contact surface and/or bearing surface. Additional operations, such as cleaning off the scaling which can occur in hot-forming, can furthermore be eliminated.
- the method comprises a preliminary forming phase, in which the inner ring blank is produced by forming from an annulus, in particular a plane annulus.
- the annulus may be parted from a metal strip.
- the shaping involves folding-over and extrusion of the annulus.
- An example of how the preliminary forming phase is performed is shown in the publication U.S. Pat. No. 2,880,495 cited in the introduction.
- the preliminary forming means that a very inexpensive semi-finished product can be used to produce the inner ring, so that the cost-effectiveness of the method is still maintained.
- a thickness s of the material strip, and hence of the annulus parted from this, is may be of a dimension such that—without the fixed edge—the extruded inner ring has a wall thickness c 1 at its thickest point of c 1 ⁇ 0.85 to 0.95 ⁇ s.
- the inner ring is formed from the annulus by means of at least two extrusion steps.
- the fixed edge portion comprises a fixed edge having a check surface for the tapered rollers of the tapered roller bearing, in particular for the end faces of the tapered rollers.
- the check surface is of toroidal shape, the check surface being toroidally shaped in the main forming step.
- the toroidal check surface is characterized in that this is of annular shape but is convexly curved like a doughnut or torus. The shape may also be described as a life buoy, tire or bulbously curved surface having a hole.
- the check surface Viewed in longitudinal section through the inner ring, the check surface extends in the same direction as a radial plane which is oriented perpendicularly to the main axis of rotation of the inner ring, over an annular area. Inside this annular area the toroidal check surface has a convex elevation.
- the toroidal check surface serves to reduce the contact surface area between the end face of the tapered rollers and the fixed edge of the fixed edge portion.
- the tapered roller bearing may comprise tapered rollers which likewise have a toroidal contact surface for bearing on the toroidal check surface of the fixed edge. This dual measure results in an especially small contact surface area, thereby minimizing the friction in the tapered roller bearing.
- the inner ring blank comprises an unfinished flanged edge portion and the inner ring comprises a flanged edge portion, the unfinished flanged edge portion being transformed into the flanged edge portion in the main forming step.
- the flanged edge portion may extend in an axial direction, for example, as a sleeve-like continuation of the raceway portion and may be shaped to form the flanged edge in the main forming step or subsequently in a further forming step. Integrating the flanged edge into the inner ring allows particularly cost-effective manufacturing of the latter, since ultimately only the tool for the main forming step needs to be modified once.
- the disclosure further relates to a tapered roller bearing having an inner ring, in which the inner ring comprises a raceway portion and a fixed edge portion; and an outer ring together with a plurality of tapered rollers, in which the tapered rollers are arranged so that they roll between the outer ring and the inner ring.
- the inner ring may be produced in its final contour without any cutting by means of extrusion by the method according to the disclosure as has previously been described.
- the tapered roller bearing having the inner ring therefore again reflects the advantages of the method in the form of a product.
- the inner ring comprises a fixed edge portion, as has already been described.
- the inner ring may likewise comprise the flanged edge portion as has already been described,
- the check surface of the fixed edge and/or the end face of the tapered rollers may be of toroidal shape. This measure serves to reduce the friction in the tapered roller bearing.
- the outer ring is produced in its final contour without any cutting by means of extrusion, the inner raceway portion forming a raceway, in particular a contact surface and/or bearing surface for the tapered rollers.
- the outer ring like the inner ring, is more preferably formed from an annulus, firstly in a preliminary forming phase into an outer ring blank and subsequently in a main forming step into the outer ring.
- a thickness s of the material strip, and hence of the annulus parted from this, may be of a dimension such that the outer ring extruded therefrom has a wall thickness c 2 at its thickest point of c 2 ⁇ 0.85 to 0.95 ⁇ s.
- FIG. 1 shows a schematic longitudinal section along a main axis of rotation of a tapered roller bearing as an exemplary embodiment of the disclosure
- FIG. 2 shows a schematic illustration of the method for producing an inner ring and optionally, in addition, an outer ring for the tapered roller bearing in FIG. 1 ;
- FIGS. 3 a , 3 b , 3 c show various optional details of the inner ring and a toroidal tapered roller.
- FIG. 1 shows a schematic longitudinal half-section of a tapered roller bearing 1 along a main axis of rotation H as an exemplary embodiment of the disclosure.
- the tapered roller bearing 1 comprises an inner ring 2 , an outer ring 3 and multiple tapered rollers 4 , which are arranged so that they roll between the inner ring 2 and the outer ring 3 .
- the tapered roller bearing 1 is embodied as a single-row tapered roller bearing.
- the tapered roller bearing 1 is embodied, in particular, as a radial rolling bearing in which the contact angle 5 is between 0 and 45 degrees.
- the tapered rollers 4 have a truncated-cone shape with a conically tapering bearing surface 6 .
- the tapered rollers 4 furthermore each have a small end face 7 and a large end face 8 .
- An axis of rotation 9 of the tapered rollers 4 is arranged inclined in relation to the main axis of rotation H.
- the outer ring 3 has a cylindrical outer surface 10 and a conical inner raceway 11 oriented radially inwards for the tapered rollers 4 .
- the outer ring 3 is produced in one piece.
- the outer ring 3 may be made of metal, such as steel.
- the outer ring 3 at its thickest point has a wall thickness c 2 .
- the inner ring 2 has a cylindrical inner surface 12 , which defines a through-opening of the inner ring 2 .
- the outer cylindrical surface 10 serves for mounting in a first support structure, such as a socket or a bore, for example; the inner cylindrical surface 12 serves for mounting on a second support structure, such as a spindle or a shaft, for example.
- the inner ring 2 may be divided in an axial direction to the main axis of rotation H into a raceway portion 13 and a fixed edge portion 14 .
- the raceway portion 13 forms a raceway 15 , in particular a contact surface or bearing surface, on which the tapered rollers 4 roll.
- the raceway 15 is embodied as an outer raceway of the inner ring 2 and has a conical shape.
- the fixed edge portion 14 comprises a fixed edge 14 a having a check surface 16 for the large end face 8 of the tapered rollers 4 .
- the check surface 16 extends at an angle, perpendicularly or approximately perpendicularly in the longitudinal section shown, to the contact surface 15 .
- the inner ring 2 has the shape of a horizontal, large L, in which the horizontal arm is formed by the raceway portion 13 and the arm projecting therefrom is formed by the fixed edge portion 14 .
- the tapered rollers 4 are arranged in a cage 17 .
- the inner ring 2 at its thickest point has a wall thickness c 1 .
- the inner ring 2 and optionally also the outer ring 3 may be brought to their final shape without any cutting, by extrusion.
- the raceway 15 and the inner raceway 11 are cold-formed by at least one extrusion step.
- retaining web 30 in which the cage 17 can engage by way of retaining elements 31 , is formed on the fixed edge 14 a , so that the cage 17 and thereby the tapered rollers 4 are secured by positive interlock to prevent migration away from the check surface 16 and/or the fixed edge portion 14 .
- annulus 19 is produced as intermediate product for the outer ring 3 by removing a center part 20 .
- the center part 20 forms a further circular blank 21 , which is a semi-finished product for the inner ring 2 .
- a further center part 22 is removed from the further circular blank 21 , so that in step I an annulus 19 is provided for the outer ring 3 and a further annulus 23 is provided as intermediate product for the inner ring 2 .
- the procedure shown makes particularly economical use of the material of the circular blank 18 . Alternatively it is also possible to use another area of the metal strip instead of the center part 20 .
- the annulus 19 is formed into an outer ring blank 24 , the outer ring blank 24 having the shape of a sleeve.
- Step II in particular involves folding-over of the annulus 19 .
- the further annulus 23 is formed into an inner ring blank 25 , the inner ring blank 25 , however, already being formed as a contoured sleeve.
- Step II in particular involves folding-over and extrusion of the further annulus 23 .
- the preliminary forming step takes the form of an extrusion process in which a temperature of the outer ring blank 24 and of the inner ring blank 25 is always less than the recrystallization temperature of the basic material.
- the inner ring blank 25 comprises an unfinished raceway portion 26 and an unfinished fixed edge portion 27 .
- the outside diameter of the unfinished fixed edge portion 27 is larger than the outside diameter of the unfinished raceway portion 26 .
- the inner ring blank 25 takes the form of a sleeve with an outside diameter and inside diameter constantly increasing in an axial direction.
- the inner ring blank 25 has a through-opening 28 , which subsequently in the inner ring 2 forms the through-opening having the cylindrical inner surface 12 .
- the unfinished raceway portion 26 is formed as a surface of a conically tapering portion both on the inner surface and on the outer surface of the inner ring blank 25 .
- Step III is a main forming step in which the outer ring blank 24 is formed into the outer ring 3 and the inner ring blank 25 is formed into the inner ring 2 or alternatively into the inner ring 2 ′ (possibly having a flanged edge 32 , cf. FIG. 3 c ), in each case by means of extrusion.
- the flanged edge 32 may be formed before or after uniting the inner ring 2 ′ with the tapered rollers 4 .
- the unfinished raceway portion 26 is transformed into the raceway portion 13 in such a way that the raceway 15 is already formed by the main forming step.
- the inner raceway 11 of the outer ring 3 is already formed by the main forming step or step III.
- a thickness s of the material strip 18 and hence of the annuli 19, 23 parted from this is of a dimension such that at its thickest point (cf. FIG. 1 ) the inner ring 2 extruded therefrom and also the outer ring 3 each have a wall thickness c 1 , c 2 of ⁇ 0.85 to 0.95 ⁇ s.
- FIG. 3 a represents the fixed edge portion 14 in the area of the fixed edge 14 a of the inner ring 2 as a detailed enlargement. It can be seen that the check surface 16 of the fixed edge 14 a is of toroidal design, so that, compared to a radial plane R relative to the main axis of rotation H, a convex annular area is formed, which reaches a maximum in the center part of the annular area.
- the retaining web 30 in which the cage 17 can engage by way of retaining elements 31 ( FIG. 1 ), is formed on the radially outer area of the fixed edge 14 a of the fixed edge portion 14 , so that the cage 17 and hence the tapered rollers 4 are secured by positive interlock to prevent migration away from the check surface 16 and/or the fixed edge portion 14 .
- FIG. 3 b shows a three-dimensional view of a tapered roller 4 .
- the large end face 8 of the tapered roller 4 is of toroidal design, so that the contact area between the large end face 8 of the tapered roller 4 and the check surface 16 is minimized, thereby reducing friction.
- FIG. 3 c shows a fixed edge portion 14 with a fixed edge 14 a of a further inner ring 2 ′, which does not comprise the retaining web 30 .
- a flanged edge 32 is provided, which is also produced by the main forming step and/or step III, as an axial extension of the raceway portion 13 . In the subsequent production and/or assembly step the extension is bent over as a flanged edge 32 .
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
c2≤0.85 to 0.95·s.
-
- 1 tapered roller bearing
- 2,2′ inner ring
- 3 outer ring
- 4 tapered rollers
- 5 contact angle
- 6 bearing surface
- 7 small end face
- 8 large end face
- 9 axis of rotation
- 10 cylindrical outer surface
- 11 conical inner raceway
- 12 cylindrical inner surface
- 13 raceway portion
- 14 fixed edge portion
- 14 a fixed edge
- 15 raceway
- 16 check surface
- 17 cage
- 18 circular blank
- 19 annulus
- 20 center part
- 21 circular blank
- 22 center part
- 23 annulus
- 24 outer ring blank
- 25 inner ring blank
- 26 unfinished raceway portion
- 27 unfinished fixed edge portion
- 28 through-opening
- 30 retaining web
- 31 retaining elements
- 32 flanged edge
- H main axis of rotation
- R radial plane
- C1 wall thickness of the inner ring at thickest point
- C2 wall thickness of the outer ring at thickest point
- S thick annulus
Claims (6)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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DE102015210764 | 2015-06-12 | ||
DE102015210764.7A DE102015210764A1 (en) | 2015-06-12 | 2015-06-12 | Method for manufacturing an inner ring for a tapered roller bearing and tapered roller bearing with an inner ring |
DE102015210764.7 | 2015-06-12 | ||
PCT/DE2016/200267 WO2016198070A1 (en) | 2015-06-12 | 2016-06-08 | Method for producing an inner ring for a tapered roller bearing, and tapered roller bearing having an inner ring |
Publications (2)
Publication Number | Publication Date |
---|---|
US20180172068A1 US20180172068A1 (en) | 2018-06-21 |
US10502260B2 true US10502260B2 (en) | 2019-12-10 |
Family
ID=56693920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/578,749 Expired - Fee Related US10502260B2 (en) | 2015-06-12 | 2016-06-08 | Method for producing an inner ring for a tapered roller bearing, and tapered roller bearing having an inner ring |
Country Status (5)
Country | Link |
---|---|
US (1) | US10502260B2 (en) |
EP (1) | EP3308044B1 (en) |
CN (1) | CN107690360A (en) |
DE (2) | DE102015210764A1 (en) |
WO (1) | WO2016198070A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102022127897A1 (en) * | 2022-10-21 | 2024-05-02 | Schaeffler Technologies AG & Co. KG | Electric axle drive train, method for assembling an axle drive train, rolling bearing arrangement and kit-of-parts |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB304992A (en) | 1928-06-29 | 1929-01-31 | Timken Roller Bearing Co | Improvements relating to roller bearings |
US1727576A (en) * | 1927-05-05 | 1929-09-10 | Timken Roller Bearing Co | Roller bearing |
US2880495A (en) | 1955-02-16 | 1959-04-07 | Federal Mogul Bower Bearings | Method for making tapered roller bearing cones |
US2913811A (en) | 1956-12-20 | 1959-11-24 | American Radiator & Standard | Cold extrusion of bearing races |
US3496619A (en) * | 1967-11-14 | 1970-02-24 | Verson Allsteel Press Co | Method and apparatus for making inner and outer races for a roller bearing |
US3737965A (en) * | 1970-06-18 | 1973-06-12 | Timken Co | Roller bearing rings |
DE102005017588B3 (en) | 2005-04-16 | 2006-06-08 | Aktiebolaget Skf | Taper roller bearing ring producing method, involves shaping ring from axially deep-drawn area of sheet metal by forming deep-drawn area of metal and separating largely completed bearing ring from non axial deep-drawn area of metal |
DE102005028093B3 (en) | 2005-06-17 | 2007-01-11 | Ab Skf | Method for the tapered simultaneous production of a tapered roller bearing inner ring and a tapered roller bearing outer ring used in rolling bearings comprises deforming an annular or plate-like metal sheet an further processing |
JP2008296241A (en) | 2007-05-31 | 2008-12-11 | Nsk Ltd | Method for manufacturing bearing ring for rolling bearing |
DE102011004706A1 (en) | 2011-02-25 | 2012-08-30 | Schaeffler Technologies Gmbh & Co. Kg | Tapered roller bearing with cage |
DE102011005326A1 (en) | 2011-03-10 | 2012-09-13 | Schaeffler Technologies Gmbh & Co. Kg | Method for producing a bearing ring, in particular for a tapered roller bearing |
CN103328839A (en) | 2011-02-16 | 2013-09-25 | 谢夫勒科技股份两合公司 | Anti-friction bearing |
CN203348310U (en) | 2013-07-11 | 2013-12-18 | 浙江正大轴承有限公司 | Conical roller bearing |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101520071B (en) * | 2009-04-09 | 2011-05-11 | 福建省永安轴承有限责任公司 | Tapered roller bearing with high strength and low friction torque |
-
2015
- 2015-06-12 DE DE102015210764.7A patent/DE102015210764A1/en not_active Withdrawn
-
2016
- 2016-06-08 EP EP16753243.1A patent/EP3308044B1/en active Active
- 2016-06-08 WO PCT/DE2016/200267 patent/WO2016198070A1/en active Application Filing
- 2016-06-08 CN CN201680033610.9A patent/CN107690360A/en active Pending
- 2016-06-08 DE DE112016002644.7T patent/DE112016002644A5/en not_active Withdrawn
- 2016-06-08 US US15/578,749 patent/US10502260B2/en not_active Expired - Fee Related
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1727576A (en) * | 1927-05-05 | 1929-09-10 | Timken Roller Bearing Co | Roller bearing |
GB304992A (en) | 1928-06-29 | 1929-01-31 | Timken Roller Bearing Co | Improvements relating to roller bearings |
US2880495A (en) | 1955-02-16 | 1959-04-07 | Federal Mogul Bower Bearings | Method for making tapered roller bearing cones |
US2913811A (en) | 1956-12-20 | 1959-11-24 | American Radiator & Standard | Cold extrusion of bearing races |
US3496619A (en) * | 1967-11-14 | 1970-02-24 | Verson Allsteel Press Co | Method and apparatus for making inner and outer races for a roller bearing |
US3737965A (en) * | 1970-06-18 | 1973-06-12 | Timken Co | Roller bearing rings |
DE102005017588B3 (en) | 2005-04-16 | 2006-06-08 | Aktiebolaget Skf | Taper roller bearing ring producing method, involves shaping ring from axially deep-drawn area of sheet metal by forming deep-drawn area of metal and separating largely completed bearing ring from non axial deep-drawn area of metal |
DE102005028093B3 (en) | 2005-06-17 | 2007-01-11 | Ab Skf | Method for the tapered simultaneous production of a tapered roller bearing inner ring and a tapered roller bearing outer ring used in rolling bearings comprises deforming an annular or plate-like metal sheet an further processing |
JP2008296241A (en) | 2007-05-31 | 2008-12-11 | Nsk Ltd | Method for manufacturing bearing ring for rolling bearing |
CN103328839A (en) | 2011-02-16 | 2013-09-25 | 谢夫勒科技股份两合公司 | Anti-friction bearing |
DE102011004706A1 (en) | 2011-02-25 | 2012-08-30 | Schaeffler Technologies Gmbh & Co. Kg | Tapered roller bearing with cage |
DE102011005326A1 (en) | 2011-03-10 | 2012-09-13 | Schaeffler Technologies Gmbh & Co. Kg | Method for producing a bearing ring, in particular for a tapered roller bearing |
US20140068947A1 (en) * | 2011-03-10 | 2014-03-13 | Schaeffler Technologies AG & Co. KG | Method for producing a bearing ring, in particular for a tapered roller bearing |
CN203348310U (en) | 2013-07-11 | 2013-12-18 | 浙江正大轴承有限公司 | Conical roller bearing |
Non-Patent Citations (2)
Title |
---|
China Office Action for CN201630033610.9; 7 pgs; dated Jul. 10, 2017 by China Intellectual Property Office. |
K. Lange, A Manufacturing Method of Ball Bearing Inner Ring, Comprising; Blanking Sheet; Flanging to get Preliminary Profile; Extrusion Technology; Sep. 30, 2014. |
Also Published As
Publication number | Publication date |
---|---|
WO2016198070A1 (en) | 2016-12-15 |
EP3308044B1 (en) | 2022-08-10 |
DE102015210764A1 (en) | 2016-12-15 |
US20180172068A1 (en) | 2018-06-21 |
CN107690360A (en) | 2018-02-13 |
DE112016002644A5 (en) | 2018-03-08 |
EP3308044A1 (en) | 2018-04-18 |
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